As a pre-Halloween trick and treat, Baltimore's Mr. Trash Wheel -- a water wheel in the Inner Harbor that filters refuse from the Jones Falls -- came to life with a pair of 4-foot-tall "googly eyes" on Friday.

The Healthy Harbor Initiative, which oversees the wheel, put them in place temporarily. Nearly 1,400 fans have signed a petition asking to let Mr. Trash Wheel see permanently.

Healthy Harbor officials said on the organization's Facebook page they were testing the eyes as a "proof of concept" for something more permanent.

"We think we could go even bigger with the googly eyes, but anything larger than four feet became a challenge to transport for this test shoot," they wrote.